Index tab for loose-leaf sheets



March 3, 1931. 5 SCHADE 1,795,046

INDEX TAB FOR LOOSE LEAF SHEETS Filed April 3, 1930 O O A 5. .5. 4 E5 0I O 2 11.

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fnvenfar Patented Mar. 3, 1931 UhllTED STATES PATENT OFFICE FRANK S.SOHADE, OF HOLYOKE, MASSACHUSETTS, ASSIGNOR TO NATIONAL BLANK BOOKCOMPANY, OF HOLYOKE, MASSACHUSETTS, A CORPORATION OF MASSACHU- SETTSINDEX TAB FOR, LOOSE-LEAF SHEETS Application filed April 3, 1930. SerialNo. 441,214.

5 printed thereon any desired letters or other insignia, said cards orslips being readily removable. V y

In the accompanying drawings which are to be read as a part of thefollowing descrip- 1@ tion Figure 1 is an elevation of a sheet showing acomparatively thick strip of celluloid aplied around the edge of a sheetand glued or otherwise amalgamated thereto, this being the first step incarrying out my invention;

Figure 2 is a similar view but showing a window or sight opening cut outof the celluloid strip, this being the second step of my invention;

Figure 3 is a view similar to Figure 2, but showing a transparentsection of celluloid wrapped around the celluloid sight opening andglued or otherwise amalgamated with the frame of said opening and withthe sheet immediately inside said frame, this being the third stepfollowed in producing my invention;

Figure 4 view of the construction shown at Figure 3, but with the edgeof the sheet and the ends of the window frame cut away so as to leavethe finished tab extending beyond the sheet, this being the final stepin the method of making my tab;

Figure 5 is a section at the line 55 of Figure 1;

' Figure 6 is a section at the line 6-6 of ure 3, and

Figure 7 is a section at the line 77 of Figure 4';

In the following description similar numerals of reference will be usedto denote like parts in the several figures of the drawing. The sheetsshown in the drawing are what are known as loose leaf sheets such as areutilized in loose leaf binders either as ordinary page sheets or asinterleafers, but it is immaterial what these sheets are so long asindex tabs are serviceable in connection therewith.

In carrying out my invention, a comparatively thick strip 1 of celluloidor other suitable material is glued or otherwise amalgamated with asheet 2 of paper in lapped position around its edge, and if the strip iscelluloid the latter is first softened so as to become tacky and thenfolded around the edge of the paper and compressed thereto so that theunion between the strip and the paper will be a sort of amalgamation, asis shown at Figtures 1 and 5.

A window 3 is then cut in the stripin such manner as to leave asurrounding frame 4, as shown at Figure 2.

An overlay v 5 of transparent celluloid is then wrapped around thewindow 3 and frame 4 on both sides and amalgamated with the frame andwith the sheet 2 so as to present a margin 6 beyond the inner edge ofthe frame on both sides of the sheet, as shown at Figures 3 and 6, whichwill leave a space or pocket 7 between the two sides of the overlaywithin the confines of the frame.

The edge of the sheet 2 and the ends of the frame are then cut away soas to leave the inner partof the frame attached to the sheet, and theends of the overlay 5 open so as to permit access at both ends to thepocket 7 as shown at Figures 4 and 7.

It will thus be seen that the resultant tab, which I will denotegenerally by the numeral 8 in Figures 4 and 7 is not only firmly securedto the sheet but is greatly reenforced by the inner and outer edges ofthe frame, while at the same time a small card can readily be insertedwithin the pocket 7 or removed therefrom, and there will be nolikelihood of cards accidentally slipping from these pockets since thewalls of the latter will not swell or 7 tioned reenforce and amalgamatedWith the overlay to said frame and to said sheet beyond the inner edgeof said frame, and finally cutting away the edge of the sheet and theends of the frame.

2, A projecting index tab for a paper sheet,

comprising transparent celluloid sections having a pocket therebetweenand open at the ends, said pocket reenforced along its outer port-ionandhaving a reenforce along the inner portion which latter reenforceis'secured to saidsh'eet, hile said sections have their innerextremities overlapping this last-menlatter and said sheet. v x v Intestimony whereof I afiiX my signature hereto. o o

J FRANK- S; SCHADE;

